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https://issues.apache.org/jira/browse/LUCENE-1678?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12717823#action_12717823
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Earwin Burrfoot commented on LUCENE-1678:
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Second this. Though I lost any hope for sane Lucene release/compat rules.
> Deprecate Analyzer.tokenStream
> ------------------------------
>
> Key: LUCENE-1678
> URL: https://issues.apache.org/jira/browse/LUCENE-1678
> Project: Lucene - Java
> Issue Type: Bug
> Components: Analysis
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Priority: Minor
> Fix For: 2.9
>
>
> The addition of reusableTokenStream to the core analyzers unfortunately broke
> back compat of external subclasses:
>
> http://www.nabble.com/Extending-StandardAnalyzer-considered-harmful-td23863822.html
> On upgrading, such subclasses would silently not be used anymore, since
> Lucene's indexing invokes reusableTokenStream.
> I think we should should at least deprecate Analyzer.tokenStream, today, so
> that users see deprecation warnings if their classes override this method.
> But going forward when we want to change the API of core classes that are
> extended, I think we have to introduce entirely new classes, to keep back
> compatibility.
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